Author/Authors :
Araki، نويسنده , , T.، نويسنده , , Nishima، نويسنده , , H.، نويسنده , , Hata، نويسنده , , H.، نويسنده , , Yamaguchi، نويسنده , , H.، نويسنده , , Yamauchi، نويسنده , , T.، نويسنده , , Miyashita، نويسنده , , M.، نويسنده ,
Abstract :
Technologies for the after-laying test of a
long-distance gas insulated transmission line (GIL) have been
developed for the detection of partial discharge (I’D) and
contact defects. We constructed long (168 m) test line in a
deep tunnel and clarified the propagation characteristics of
PD signals through the GIL as well as the spatial sensitivity
and S/N characteristics of PD sensors for locating metallic
particles. We have also proposed the application of a
fiber-optic temperature distribution sensor for locating
contact defects and confirmed the validity of this sensor for
the GIE test line.
Keywords :
Gas insulated transmission line , GIL , partial discharge , Contact defects , Metallic foilelectrode , External antenna , Fiber-optictemperature distribution sensor , Metallic particle , In-tunnel.After-laying test
